Bromine-Functionalized Covalent Organic Frameworks Enhancing the Desorption Efficiency and Enabling Preconcentration of Brominated Pollutants for Mass Spectrometry Detection.

Covalent organic frameworks (COFs) exhibit exceptional adsorption capacity but suffer from challenging desorption. In this study, a bromine-functionalized magnetic COF composite (FeO@COF-Br) was synthesized via bromodimethylsulfonium bromide-mediated bromination of imine-linked COF on FeO nanospheres (FeO@COF), where the COF framework was constructed by 1,3,5-tris(4-formylphenyl)benzene and 2,6-diamino-3,5-diethynylpyridine. Compared with pristine FeO@COF, FeO@COF-Br enhanced desorption efficiencies for brominated contaminants by about 30% while maintaining adsorption capacity.

Hierarchical MoS/CuS photonic nanostructure accelerating photothermoelectric conversion of bacterial cellulose based phase change materials.

Phase change materials (PCMs)-integrated solar-thermal-electric generators (STEGs) have emerged as a promising platform for sustainable solar energy harvesting, yet faces critical challenges including liquid phase instability, insufficient photothermal efficiency, and limited thermoelectric output. Herein, we engineered hierarchical photonic confinement through the assembly of plasmonic CuS nanoparticles, broadband-absorbing MoS nanosheets, and porous bacterial cellulose (BC). In this tripartite architecture, BC matrix provides robust structural integrity and enhances heat transfer via its 3D interconnected nanoporous structure; MoS nanosheets enable extended photon harvesting across the ultraviolet to near-infrared spectrum; CuS nanoparticles amplify near-field optical effects through localized surface plasmon resonance.

Inter-organizational conflict and construction project performance: Influencing mechanism based on trust networks.

Research on inter-organizational conflicts among the participants of construction projects typically concentrate on the binary perspective of the project owner and contractor, disregarding the correlation of the complex relationship networks on conflict incidents. This research will propose a systematic set of strategies for reducing inter-organizational conflicts and enhancing project performance from the perspective of trust networks governance. Specifically, the research aims to uncover the interactive mechanisms among the trust network of all participants in construction projects, inter-organizational conflicts, and project performance, thereby filling the existing research gaps.

The double-edged sword effect of leader mindfulness on employee taking charge.

Background: Leadership is a crucial factor influencing employee taking charge, which plays a critical role in organizational survival and success in the VUCA (variability, uncertainty, complexity, and ambiguity) era, while previous studies have neglected the influence of leader mindfulness on taking charge. Moreover, most studies have extensively focused on the positive effects of leadership on employee taking charge, with insufficient exploration of the diverse mechanisms in different cultural contexts. Therefore, drawing on the social information processing theory, this study examined the double-edged sword effect of leader mindfulness on employee taking charge in the context of Chinese culture, along with investigating the mediating role of psychological capital and ego depletion and the moderating role of Zhongyong thinking.

An axiomatic system engineering design method based on NSGA-II algorithm applied to complex systems.

This study proposes an integrated framework that combines Axiomatic Design with Model-Based Systems Engineering, incorporating NSGA-II as an intelligent optimization engine. The framework constructs a multi-level traceability matrix linking requirements, functions, behaviors, and structural elements, and leverages NSGA-II to dynamically optimize the sequencing of the Design Structure Matrix, thereby enhancing the explicitness and visualization of coupling relationships. Rather than directly eliminating dependencies, the approach aims to support a more systematic modularity-oriented analysis.

Corrosion and Mechanical Properties of Q500 qENH Steel in Simulated Plateau Environment.

In high-altitude corrosive environments, weathering steel is widely applied due to its excellent corrosion resistance. However, the welded joint regions, where the chemical composition and microstructure undergo changes, are susceptible to the corrosion-induced degradation of mechanical properties. This study investigates the corrosion-mechanical synergistic degradation behavior of a 16 mm thick Q500 qENH base metal and its V-type and Y-type welded joint specimens.

A Review of Novel Die Attach Materials for High-Temperature WBG Power Electronic Applications.

Third-generation wide-bandgap (WBG) semiconductor power electronics exhibit excellent workability, but high-temperature packaging technology limits their applications. TLP, TLPS, and nanoparticle sintering have the potential to achieve a high-temperature-resistant joint at a lower bonding temperature. However, a long bonding time, voids in the joint, powder oxidation, and organic solvent residues impede their application.

Polyurea-Integrated FeSnC/Sn/CNF Hybrid for Enhanced Broadband Microwave Absorption.

Effective mitigation of electromagnetic microwave (EMW) pollution requires the development of lightweight, broadband, and high-performance microwave absorbing materials. In this work, a novel FeSnC/Sn/CNF composite is synthesized via a combination of hydrothermal synthesis, electrospinning, and high-temperature carbonization. The optimal sample (FSC3) achieved a minimum reflection loss (RL) of -28.

3D printable phase change information storage label films for dynamic and multi-level anti-counterfeiting.

Anti-counterfeiting technology demands continuous innovation to address escalating global counterfeiting challenges. This study introduces 3D printable phase change information storage label films for dynamic, multi-level anti-counterfeiting applications. Utilizing extrusion-based 3D printing, customizable anti-counterfeiting labels with complex encrypted information such as barcodes and QR codes were fabricated.

Highly Sensitive Anisotropic Multidirectional Strain Sensor through Direct-Write Micro-3D Printing Ordered Microfibers.

Multidirectional strain sensors exhibit significant potential in flexible electronic devices, facilitating precise detection of complex movements. However, achieving both macroscopic and microscopic anisotropy in the conductive networks of strain sensors remains challenging, particularly in developing the high sensitivity and selectivity needed to effectively differentiate axial strains. Highly ordered microfiber is the key to realize high-selectivity multidirectional strain sensor.

Synergistic mechanisms of compound thermophilic bacteria on waste sludge hydrolysis and reduction: Extracellular polymers degradation, enzyme activity and microbial community changes.

Sludge hydrolysis and reduction using a single thermophilic bacterium faces poor environmental adaptability and limited ability to degrade recalcitrant organic matter. This study innovatively screened three thermophilic bacteria (TB), Bacillus sp. AT07-1 (X1), Parageobacillus toebii (X2), and Geobacillus kaustophilus (X3), and revealed the impact of their synergistic effect on the sludge hydrolysis efficiency and reduction.

Research on microchannel fabrication in UV curable resin using combined beam processing.

To break through the limitations of traditional rectangular microchannel processing methods for microfluidic devices, this paper proposes a processing technique based on a holographic combined femtosecond laser beam. The phase and topology of the hologram are adjusted by SLM to flexibly control the spot width and energy distribution of a generated Bessel beam, thus realizing high-precision and multi-size processing. To achieve high-precision microchannel sidewalls and bottom surfaces, the positive first-order Bessel beam is shifted at an appropriate position after the zero-order light by using a blazed grating to obtain the suggested holographic combined beam required for processing.

Spatio-temporal variation of ecological health assessment based on the benthos biological integrity index in eutrophic lake, China.

Taihu lake is a typical eutrophic lake, which has experienced severe degradation in recent decades, understanding the spatio-temporal variation of ecological health can assist guide lake management in the future. Here, benthic macroinvertebrate compositions, in addition to waters and sediments, were collected from Taihu lake at 16 sampling sites and used to evaluate spatio-temporal variation in benthic macroinvertebrates. Further, a benthic index of biotic integrity (B-IBI) was developed to assess lake ecological health.

A model for simulating the 3D quadrangular rotary braiding process.

3D quadrangular rotary braiding is one vital technique of high efficiency and flexibility to manufacture preforms for composites. However, the use of this technique is limited to fabricating a few traditional braided fabric structures, which is attributed to the lack of knowledge of its process. Therefore, a model is proposed to simulate the braiding process so as to develop new processes and corresponding fabric structures.

Seismic slope stability analysis using modified pseudo dynamic method with uniform random field of initial phases.

This paper develops an enhanced pseudo dynamic method for conducting seismic stability analysis of slopes. The enhancement is justified by the development of uniform sampling approach and the incorporation of both different and correlated initial phases through a uniform random field. The advanced methodology, named by modified pseudo dynamic Bishop method (MPDBM) is verified against the existing research results and extended to homogeneous soil slope with different scales emphasizing the effect of scale of fluctuation on the minimum factor of safety (FSmin).

Calcium-loaded activated carbon microtubes as a structural framework of aerobic granules: crosslinking networks overcome native framework limitations.

Aerobic granular sludge (AGS) technology is often constrained by slow granulation and structural instability, issues largely attributed to imbalances in filamentous bacteria and extracellular polymeric substances (EPS). In this study, calcium-loaded activated carbon microtubes (ACMTs-Ca) were developed as novel frameworks to enhance AGS formation and stability. The interfacial energy barrier between microorganisms and ACMTs-Ca was reduced by 67.

Contribution of Protected Area Networks to Achieving Global Biodiversity Framework Targets and Sustainable Development Goals: Evidence From Coastal Shandong, China.

The protected area network (PAN) is a vital strategy for enhancing ecological integrity and connectivity. However, its contributions to the Kunming-Montreal Global Biodiversity Framework (GBF) 2030 Targets and Sustainable Development Goals (SDGs) remain understudied due to limited indicator assessments and regional case comparisons. This study applied circuit theory to construct and optimize a PAN in China's coastal region.

Greenhouse gas emissions analysis from industrial hazardous waste treatment: A case study in Qingdao, China.

The rapid industrialization in China has led to significant environmental (especially the greenhouse effect) and human impacts resulting from the industrial hazardous waste (IHW) treatment. Given that incineration is the primary method of IHW disposal, it is imperative to conduct a thorough investigation into the characteristics of greenhouse gas (GHG) emissions and their mitigation based on the life-cycle assessment methodology. This study analysed the carbon emissions generated by the primary disposal systems within a typical IHW treatment park in Qingdao over a 3-year period.

Bionic fire-resistant chitosan aerogels with the triple stealth functionality: microwaves, infrared and sound.

The complex electromagnetic environment in national defense requires tailored microwave-absorbing materials for different scenarios. In aerospace, lightweight and multifunctional materials are especially important. While aerogels offer low density, they must be further modified to become effective microwave absorbers.

Engineered Crown-Ether-Functionalized Hydrogels Enable Selective Ammonium Extraction.

Ammonium (NH) recovery is essential for shifting from conventional pollutant removal to resource recovery strategies. However, the effective capture of NH is challenged by competition from coexisting ions such as K and Na in wastewater. In this study, poly(acrylic acid) (PAA) hydrogels were functionalized with 15-crown-5 (15C5) to enhance the NH selectivity.

RETRACTED: He et al. The Multi-Station Fusion-Based Radiation Source Localization Method Based on Spectrum Energy. 2025, , 1339.

The journal retracts the article titled "The Multi-Station Fusion-Based Radiation Source Localization Method Based on Spectrum Energy" [...

Fueling immunity: the synergy of natural products and exercise for optimal health.

Moderate exercise has been associated with improved immune function and a reduced risk of inflammatory conditions and infections. Some evidence also suggests a potential role in reducing cancer risk. In contrast, excessive physical activity can suppress the immune system and increase the risk of inflammatory and allergic conditions.

A novel carbon-negative side-stream MBMBR process for municipal wastewater reclamation driven by biopolymer and nutrient recovery.

With the rapid evolution of global climate change and resource shortages, there is a growing need for technological innovation to achieve energy and carbon-neutral wastewater reclamation. In this study, a high-rate side-stream moving bed membrane bioreactor (MBMBR) process was used for municipal wastewater reclamation via COD capture for biopolymer harvesting and nutrient recovery. The results revealed excellent COD capture ability (organic conversion loading of 2.

[Occurrence Characteristics of Microplastics and Influencing Factors in Coastal Salinized Soil].

Microplastics are widespread in terrestrial and marine environments. As a transition zone between land and ocean, coastal soils have unique microplastic pollution characteristics. To reveal the characteristics of microplastic pollution in coastal soils, soils with different salinization levels were collected from Wudi County toward the sea.

[Decoupling Effect and Interactive Relationship Among Transportation Infrastructure, Economic Growth, and Carbon Emissions in China].

The construction of transportation infrastructure boosts economic growth while facing the challenge of carbon emissions pressure. Clarifying the relationship among transportation infrastructure, economic growth, and carbon emissions is important in order to promote the realization of the goal of "dual-carbon." Based on the panel data of 30 provinces in China from 2002 to 2021, the research period was divided into four stages （2002-2006, 2007-2011, 2012-2016, and 2017-2021）.